Intelli Sense is a general term for a variety of code editing features including: code completion, parameter info, quick info, and member lists.
Intelli Sense features are sometimes called by other names such as "code completion", "content assist", and "code hinting." VS Code Intelli Sense is provided for Java Script, Type Script, JSON, HTML, CSS, Less, and Sass out of the box.
If that doesn't work I would try to disable Re Sharper in VS2013 and try to get the normal intellisense working.
Same procedure as above if Re Sharper fails to restore the settings.
delivers the best support for Visual Studio 2017 RTM.